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Finding the Fourth Proportional to 219,344.80, 329,017.20 and 143,237.20

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Solution

The fourth proportional to 219,344.80, 329,017.20 and 143,237.20 is: 214,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,344.80 : 329,017.20 = 143,237.20 : x
  2. Step 2: Convert to fraction form
    219,344.80/329,017.20 = 143,237.20/x
  3. Step 3: Cross multiply
    219,344.80x = 329,017.20 × 143,237.20
  4. Step 4: Simplify right side
    219,344.80x = 47,127,502,479.84
  5. Step 5: Solve for x
    x = 47,127,502,479.84/219,344.80
  6. Step 6: Final answer
    x = 214,855.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.